diff mbox series

[PATCH/RFT] arm64: dts: renesas: r8a77990: Create thermal zone to support IPA

Message ID 1545338982-19466-4-git-send-email-ykaneko0929@gmail.com (mailing list archive)
State Superseded
Delegated to: Simon Horman
Headers show
Series [PATCH/RFT] arm64: dts: renesas: r8a77990: Create thermal zone to support IPA | expand

Commit Message

Yoshihiro Kaneko Dec. 20, 2018, 8:49 p.m. UTC 
From: Dien Pham <dien.pham.ry@renesas.com>

Setup a thermal zone driven by SoC temperature sensor.
Create passive trip points and bind them to CPUFreq cooling
device that supports power extension.

In R-Car Gen3, IPA is supportted for only one channel
 (on H3/M3/M3N board, it is channel THS3). Reason:
  Currently, IPA controls base on only CPU temperature.
  And only one thermal channel is assembled closest
  CPU cores is selected as target of IPA.
  If other channels are used, IPA controlling is not properly.

Signed-off-by: Dien Pham <dien.pham.ry@renesas.com>
[takeshi.kihara.df: fix W=1 dtc unit_address_vs_reg warnings]
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com>
---

This patch is based on the devel branch of Simon Horman's renesas tree.

 arch/arm64/boot/dts/renesas/r8a77990.dtsi | 28 +++++++++++++++++++++++++---
 1 file changed, 25 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/renesas/r8a77990.dtsi b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
index b2f606e..c37ba9d 100644
--- a/arch/arm64/boot/dts/renesas/r8a77990.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
@@ -66,6 +66,10 @@ 
 			power-domains = <&sysc R8A77990_PD_CA53_CPU0>;
 			next-level-cache = <&L2_CA53>;
 			enable-method = "psci";
+			#cooling-cells = <2>;
+			dynamic-power-coefficient = <277>;
+			cooling-min-level = <0>;
+			cooling-max-level = <2>;
 		};
 
 		a53_1: cpu@1 {
@@ -1760,11 +1764,24 @@ 
 	thermal-zones {
 		cpu-thermal {
 			polling-delay-passive = <250>;
-			polling-delay = <1000>;
-			thermal-sensors = <&thermal>;
+			polling-delay = <0>;
+			thermal-sensors = <&thermal 0>;
+			sustainable-power = <717>;
 
 			trips {
-				cpu-crit {
+				threshold: trip-point0 {
+					temperature = <90000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				target: trip-point1 {
+					temperature = <100000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				sensor1_crit: sensor1-crit {
 					temperature = <120000>;
 					hysteresis = <2000>;
 					type = "critical";
@@ -1772,6 +1789,11 @@ 
 			};
 
 			cooling-maps {
+				map0 {
+					trip = <&target>;
+					cooling-device = <&a53_0 0 2>;
+					contribution = <1024>;
+				};
 			};
 		};
 	};